#799DD0

CSS

:root {
  --wisteria-blue: #799dd0;
  --wisteria-blue-rgb: 121 157 208;
  --wisteria-blue-oklch: oklch(0.689 0.086 257.1);
}

.element {
  color: var(--wisteria-blue);
  background-color: hsl(215 48% 65%);
  border-color: oklch(0.689 0.086 257.1);
}

Tailwind CSS v4

@theme {
  --color-wisteria-blue: #799dd0;
  --color-wisteria-blue-50: #e7f6ff;
  --color-wisteria-blue-100: #d7e9ff;
  --color-wisteria-blue-200: #bfd6fa;
  --color-wisteria-blue-300: #9db9e4;
  --color-wisteria-blue-400: #7ea0d1;
  --color-wisteria-blue-500: #6188bf;
  --color-wisteria-blue-600: #5273a1;
  --color-wisteria-blue-700: #425c81;
  --color-wisteria-blue-800: #2e4460;
  --color-wisteria-blue-900: #1f2f43;
  --color-wisteria-blue-950: #0f1b2b;
}

SCSS

$wisteria-blue: #799dd0;
$wisteria-blue-rgb: 121, 157, 208;
$wisteria-blue-light: mix(#fff, $wisteria-blue, 20%);
$wisteria-blue-dark: mix(#000, $wisteria-blue, 20%);

.element {
  color: $wisteria-blue;
  box-shadow: 0 0 0 2px rgba($wisteria-blue, 0.35);
}